Glass stc rating calculator acoustic. STC Testing Methodology.

Glass stc rating calculator acoustic concrete, glass, steel) using graphical computation method based on the material thickness, density, and critical frequency values. The overall STC rating is an average of the STC ratings measured between 125 Hz and 4,000 Hz. 8 Pilkington Optiphon™ 12,8 40 -1 -3 12. Phone: 888-815-9691. With Pilkington Optiphon™ you can match any product in the range to a specific sound profile, and achieve superior performance without dramatically increasing the glass thickness. Like the STC rating System, OITC measures sound intensity loss in decibels. Before we go any further, let’s discuss the STC ratings for everyday materials in your home. 24 Page 1 of 7 Jul 9, 2018 · SoundPro offers two modes to generate calculations. But they also differ quite a bit: for example, Rw covers a larger frequency range than STC. Dec 22, 2022 · Editor’s Note: This blog post was originally published in February 2019 and has been revised to reflect industry updates. Mar 5, 2021 · STC – Sound Transmission Classification. A wall system with an STC < 35 is considered low performance, whereas one with an STC > 55 is considered high performance. Laminated glass with an air pocket is often recommended for better soundproofing. 38 35 11. *OITC is estimated based on this test. Most of the time, an assembly’s OITC rating is lower than an STC rating. Structures that receive higher STC ratings will provide a greater reduction of sound transmission within the range of the tested frequencies. For example, the sound of a whistling bird (50dB) is stronger than the sound of a falling leaf (10dB). 10). Pilkington Optiphon™ is our high performance acoustic laminated glass; it enhances sound insulating properties to meet the increasing demands for noise control. In some cases you can achieve a higher sound reduction rating using a single piece of acoustic glass as opposed to a sealed unit. The STC (Sound Transmission Class) rating is a single-num ber rating system for interio r build ing partitions and viewin g windows used to catego rize acoustic performanc e. Seals and Gasketing: Even the highest-rated door will perform poorly without effective SoundPro calculates glass usage by performance or glazing configuration. B. J2247-13-303-11-R0 Insulation Included When evaluating STC ratings for partitions, it’s crucial to consider key factors that influence sound insulation effectiveness. Email: info@commercial-acoustics. STC is a widely used rating of sound attenuation performance of wall and floor systems. 9 mm) 1/2" 0. Lab results are highly controlled and may not reflect the same performance in the field based on the conditions of your environment. A standard single insulating glass units. SoundPro then identifies the acoustic glazing solutions that meet these specifications. Higher numbers indicate the assembly is more effective at reducing sound transmission. Laminated glass is a proven, effective solution for acoustical protection. You can’t simply compare an Rw rating to an STC rating. Since the sound reduction may be different at different frequencies, test measurements are subjected to a standard procedure which yields a single number that is about equal to the average sound reduction in the middle of the human hearing range. Resilient channel can improve the STC rating of an assembly. STC and OITC are standards that measure sound attenuation. traffic noise). STC stands for sound transmission classification. Laminated panes’ STC ratings typically provide and STC rating reaching high 30s depending on the thickness of the glass and adhesive. STC ratings typically range from 0 to 100, with higher values indicating better sound insulation. The higher the STC rating, the better the sound With a wide breadth of sound-rated opening glass walls, NanaWall offers aesthetic product options to interior architects and designers. 52 37 16. It typically consists of two or more panes of glass that are separated by a layer of air or gas, with additional sound-absorbing materials such as laminates or films Mar 22, 2022 · Simply put, STC ratings measure sound level on one side of a wall, versus the other side of a wall. When STC tests are performed, the TMS 0302 requires the testing to be in accordance with ASTM E90, Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements (ref. If a 105-decibel above ground subway only registers as 80 decibels after traveling through a Window or wall, the sound experiences a 25-decibel deficit. STC ratings provide valuable information for homeowners by offering them better insight into the Feb 19, 2024 · For commercial-grade STC ratings, you could aim as high as 60, which is more than enough to reduce the sound in a firing range. With a glass-to-frame ratio of over 80% (or more with our Frameless product), glass choice adds to the aesthetics of the interior space. When integrating acoustic glass partition systems into offices or commercial spaces in Singapore, one important factor to consider is the Sound Transmission Class (STC) rating. 76 40 Duo Plus™ IGU with Laminated PVB mm Rw 6/12/6. 1. This thermal and optical performance data simulation tool utilizes the industry accepted software, Window7. High-quality doors with high STC ratings can be expensive but are a worthwhile investment. Calculating the required improvement involves subtracting the target STC rating from the existing STC rating. fiberglass, it’s important to explain some of the ways these sound insulation products are rated: STC rating – A material’s sound transmission class (STC) rating informs you of how much noise it can effectively block. 52mm laminated glass is 39. Ratings? Acoustic Ratings Explained. 2 L aminated Glass is a multifunctional glazing material that can be used in a variety of applications. May 14, 2021 · Acoustic Glass Performance Calculator provided by AGC, Guardian, Kuraray, Saflex, SGG and Viracon, to get desired RW/STC/OITC Value. STC ratings are measured as a difference in decibel levels, where a higher rating indicates more complete sound absorption and sound deadening performance. properties and aluminium system designs can help reduce noise where needed. VT's sound-resistant STC doors are found in every application from airports, healthcare, and hospitality facilities, to government and municipal buildings, as well as educational institutions. STC is determined by a weighted average of TL values taken over 16 frequencies, which are fitted to a curve in a method defined by the ASTM E413 Classification Standard for Rating Sound Insulation. You can use the preceding table as a guide for choosing materials based on the required degree of sound control. May 30, 2024 · Sound Transmission Class (STC) rating, calculated according to ASTM E413, measures the sound insulation of a window or door across the frequency range of 125 to 4000 HZ, primarily covering human speech frequencies. E413-87 in an acoustica l wall. 03. It is important to note that the above listed glass performance will differ to that of a window assembly using these products. When comparing Sound Transmission Class (STC) ratings for product comparisons, it’s crucial to understand how these values are determined. For this reason, STC (Sound Transmission Class) ratings have become a primary consideration when choosing doors for large-scale projects. *OITC is estimate d base d on this test. Mar 6, 2018 · The STC system provides a numerical rating for the air-borne sound TL of a given structure, measured at 16, individual 1/3 octave band frequencies. Acoustical Guide – Determining Minimum STC Rating Figure 1. The order of sound insulation performance from poor to excellent is: monolithic glass < laminated glass How to calculate the glass STC? One of the features of glass is sound proof,whether it's single glazing, laminated glass,insulated glass or even laminated ins Sound Control. What is an STC rating? Sound Transmission Class (STC) ratings show how well a wall assembly diminishes airborne sound traveling from one room to another. A higher sound transmission class rating indicates more effective sound insulation than a lower rating. Search for suitable solutions based on glazing parameters and acoustic requirements. The performance data below applies to monolithic glass. . It's important to note that both the dimensions of the glass and the glazing system utilized can influence the Sound Transmission Class (STC) rating. 1:2004. See additional notes below data for specific Acoustical Calculator. Sep 17, 2018 · It measures how much sound a wall, door, window or ventilation system, for instance, will block noise from getting through to the other side. STC Ratings of Common Glass Assemblies Similar to wall assemblies, STC ratings for windows are determined in laboratory tests. Shielding a building’s environment from increasing noise levels, especially near airports and busy highways, is a critical factor in the specification of glazing materials for both new and renovated structures. Give us a call at (800) 782-5742. 5” Acoustics Assembly Number: ISS-00 STC: 43 OITC: 28 Report No. STC Rating: Fire Resistance Rating: *70% recycled content is based on the average recycled glass content in all Owens Corning Sound Transmission Class (STC) rating. 2) for laboratory testing or ASTM E413, Standard May 19, 2023 · This article will explore the six variables that affect STC ratings in walls. Performance targets are selected based on acoustic ratings, and results are revealed immediately. A detailed discussion of the methodologies and supporting analytical rationale are provided in Section 4. 76 , 9. 8 Pilkington Optiphon™ 16,8 41 -1 -3 16. STC QINGDAOMORNBUILDINGMATERIALSCO. The rating covers the sound sources generated in building interiors Material: STC [dB] Single pane glass window (dual pane glass window range is 26-32″): 27: Single layer of 1/2″ drywall, glued to 6″ lightweight concrete block wall, painted both sides Dec 31, 2024 · Gaps or weaknesses in the frame can compromise the STC rating. STC ratings are calculated by a weighted average of Transmission Loss (TL: a door’s ability to reduce noise) values taken over 16 frequencies, which are fitted to a curve in a method defined by the ASTM E413 Classification Standard for Rating Sound Insulation. The Product Selector mode requires users to input acoustic performance targets using global standards of Sound Transmission Class (STC), Outside Inside Transmission Class (OITC), and Reduction Index (Rw). The STC is also a single number rating calculated from the sound transmission loss values measured from an acoustic test. com. A frequency is expressed in hertz (Hz). Double-Glazed The values given are centre of glass values. We would like to show you a description here but the site won’t allow us. If we assume that a branch of the United States Government, The University of Minnesota, The Minnesota Housing Authority, prominent acoustical engineers and several manufacturers of acoustical products are correct, a change of “1 STC” is equivalent to a change in loudness of “1 dB”. For windows, STC ratings range from 18 to 38. A higher STC rating indicates superior sound insulation. walls with the same STC rating. The higher the STC rating, to provide conservative estimates of required STC or Rw ratings to be used by the building designer as a planning tool for window glazing. Oct 26, 2018 · Table 1: Summary of Wall Types Tested and Associated ASTC. 8 operated by Lawrence Berkeley National Laboratory (LBNL) using International Glazing Database (IGDB) v102. Glass size and glazing system will affect STC rating. How to calculate an STC or OITC rating; STC versus OITC. Not all walls are the same, especially in terms of composition and material. g. * The performance data below applies to an insulating unit constructed with two plies of glass and an air or argon filled space. Glass 3 Spacer STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. These ratings, however Jul 4, 2024 · STC is another critical metric that quantifies how well a wall or other vertical partition blocks sound. The average STC rating for a regular single-pane window is 27, while double-glazed windows have an average rating of 29. sets out parameters for the Weighted Sound Reduction Index Rw. E413-87 in an ac oust ical wall. STC is the wall equivalent of CAC. That being said, anything below an STC rating of 40 might garner comments about paper thin walls. No frames are utilized in the testing to ensure accurate comparison of the glass configuration can be made without external Glass Acoustic Data Rw values Float mm Rw 3 , 4 30 5 , 6 31 8 34 10 35 12 37 19 39 Duo Plus™ IGU with Float mm Rw 4/12/4 32 5/12/5 33 6/12/6 34 Single Laminated PVB mm Rw 6. A glass type’s STC rating measures how effectively glass will provide sound insulation. ,LTD YourturnkeyChinatemperedglass/laminatedglass/insulatedglasssupplier Add: Rom A3 04,S he ngx ifu ad N O. In a nutshell, standard glass and single-pane glass will transmit sound better than thicker double-glazed and laminated options. Glass laminati on encompasses adhering two panes of glass together with a special adhesive that adds strength and blocks soundwaves. 0) of its Acoustic Calculator. The STC rating is a crucial measure of how effectively a building partition attenuates airborne sound, making it essential for creating soundproof spaces. To do this, AS/NZS ISO 717. 1/4" 41 41 How the STC Wall Calculator Works. [ ] Review and Interpret Results: Analyze the STC rating to ensure it meets your soundproofing needs. Laboratory tests are conducted per ASTM E90 and classified per ASTM E413. Your go-to portal for discovering the perfect glazing solutions, tailored to your requirements. This rating is given to materials that are tested over a range of frequencies, and are proven to block sound in some capacity. 52 , 10. Insulation will noticeably improve the STC rating of an assembly. Mar 30, 2023 · Also, an acceptable STC rating for walls may be different from the acceptable STC rating for floors, depending on whether the walls are shared by a neighbor, or a room is directly beneath a kitchen with heavy traffic. 52 39 20. NIC […] Jan 11, 2025 · The result is sound control over a greater range of frequencies and a significantly higher Sound Transmission Class (STC) rating than a window with standard dual-pane glass. Sound Transmission Class (STC) - The STC rating is a single number value quantifying the ability of a material to resist the transmission of sound. Address: 6301 N Florida Ave Tampa, FL 33604 Oct 10, 2024 · Need Sound Advice? If you have any questions or need more help, our acoustical solutions experts are standing-by to help. Data is based on testing ~36" x 84" glass to ASTM E413-87 in an acoustical wall. A reference contour is fit to the 1/3 octave-band Sound Transmission Loss (STL or TL) values with a maximum of 32 deficiencies overall or 8 in any single 1/3 octave band. STC Rating: Fire Resistance Rating: *70% recycled content is based on the average recycled glass content in all Owens Corning Dec 13, 2022 · Before taking a closer look at a head-to-head comparison of mineral wool insulation vs. The higher the rating, the less noise penetration. STC ratings range from 25 (limited sound insulation) to 60 (excellent sound insulation), but context matters. This STC Wall Calculator estimates the Sound Transmission Class (STC) rating of a wall assembly based on various materials and configurations. 29W b D3s trcQ C6 MKETIG@ rating called Rw. Determine Target STCs –Available with high NRC, CAC, and combination NRC/CAC ratings –Provide stylish and effective sound control in a full range of commercial applications including retail, healthcare, hospitality, educational and office settings –Combine top-rated acoustical performance with durability, high light reflectance and a range of textures to Dec 30, 2022 · Calculating STC Ratings for Masonry Walls. Jun 15, 2024 · STC Ratings for Windows and Glass. Compare the OITC* Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 Glass Acoustical Performance Glass Technical Document | TD-135 Vitro Architectural Glass PAGE 3 OF 4 GENERIC STC and OITC RATINGS Not to be used for design or specification purposes Glass Product Type and Thickness STC Rating OITC Rating Monolithic 3/ 32 ” 26 - 1/ 8 ” 29 - ¼” 31 29 ½” 36 33 Sealed Insulating Glass Units 1/ 8 Jun 16, 2023 · Since builders commonly use significant amounts of glass in both building envelopes and interiors, understanding and choosing the right types of glass and appropriate Sound Transmission Class (STC) ratings can help to reduce sound transmission. The higher the STC rating, the more sound will be dampened. Rw ratings are similar to STC in that they follow familiar testing methods. Calculation Example: The Sound Transmission Class (STC) rating is a measure of how well a partition or other building element blocks sound. 2 Two sheets of ½” drywall INSULATED GLASS UNITS When specifying double glazed units, it is wrong to assume that using two skins of acoustic glass will dou - ble the acoustic value of the unit. Jul 5, 2023 · STC and Sound Dampening. STC Rating: Fire Resistance Rating: *70% recycled content is based on the average recycled glass content in all Owens Corning Mar 3, 2023 · With STC you can compare windows to windows as well as windows to doors. That’s where the STC rating comes into play. 060 P. 76 , 17. 38 34 8. 38 36 12. Sound is heard at different frequencies, and so standard calculation of sound needs to take this into consideration. CAC 1. STC rating (Sound Transmission Class rating) is a score given to a building’s surface (wall, ceiling, window, etc. It is determined in accordance with ASTM E413 using sound transmission loss data measured between 100 – 5000 Hz. 76 , 13. The higher the STC value Sep 26, 2024 · Soundproof glass, also known as acoustic glass or noise-reducing glass, is a type of glass that is designed to reduce the amount of external noise that enters a building or room. Users have a range of variables to consider, including the type of acoustic interlayer, glass thickness, air space, types of insulated glass, and design strategies. Some companies A large amount of glazing configurations means the perfect glass can be yours. Aug 11, 2015 · Guardian Industries’ Glass Group, on of the UK’s leading suppliers of commercial, residential and interior glass products, has introduced the latest version (2. How the OITC Rating is Measured. The following elements go into determining the STC ASTM E413-87 within an acoustic wall, underpin the effectiveness of our products. Calculate What You Need for the Improvements You Want. This rating will give you an idea of how effective your chosen materials or construction methods are at reducing sound transmission. It’s like the cousin of CAC but focuses on walls instead of ceilings. However, architectural acoustics can often become a bewildering array of alphabet soups (STC, OITC, and IIC, to name a few!), and even acoustically experienced architects and designers can be left scratching their heads. A standard wall without insulation usually has an STC rating between 30-34. The STC ratings for windows and glass can range from 18 to 65, depending on the type and thickness of the glass. It is manufactured by permanently bonding two or more lites of glass with layers of polyvinyl butyral (PVB) interlayer, under heat and pressure, to create a single construction. [ ] Calculate the STC Rating: Let the calculator process the data and compute the STC rating. The higher the dB rating, the stronger the sound. For example, the STC of a 1/2” insulating glass unit (3mm/6mm airgap/3mm) is 28 and the STC rating of a 3/4” insulating glass unit (3mm/13. In fact, dual-pane windows with dissimilar glass can achieve STC ratings nearly as high, if not as high, as triple-pane or laminated glass. Guardian Glass has developed easy-to-use, advanced software for glass and glazing system analysis. The installed weight of concrete masonry assemblies can be determined in accordance with CMU-TEC-002-23 (ref. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows Sound Transmission Class (STC) Calculator Sound Transmission Class (STC) Calculator Select Wall Type: Wood Stud WallConcrete Block WallBrick WallDrywall Partition Wall Thickness (inches): Calculate STC Rating Nov 25, 2022 · Sound Transmission Class (STC), also known as the Sound Transmission Coefficient, is the oldest and most widely recognized sound rating system in the window and door industry. Laminated Glass Applications Calculating the STC Rating: The STC rating is calculated from a curve-fitting procedure defined by ASTM E413. 6. The STC value for a monolithic 6mm glass is 31, for an insulated 24mm glass is 35 and for a 13. The Acoustic Calculator is an industry tool that helps glass and building professionals identify the best insulating glass unit (IGU) configuration to Jul 9, 2018 · The second mode is the Glazing Configurator, which provides estimates for custom designed glazing systems. STC ratings are the ONLY way to accurately compare various noise reduction products. Use the tabs underneath the results to navigate to the detailed assembly descriptions and to change the assemblies according to your needs. However, soundproof windows can have an STC rating of 48-54 or higher Jan 20, 2022 · What Is an STC Rating? The STC rating for walls refers to the “sound transmission class” of your foundation. All data presented is for glass-only testing. Glass. While there is not a Building Code requirement for STC ratings between adjacent office or commercial spaces, the rule of thumb generally requires an STC of 40-45. The first measure of acoustic performance is referred to as the Sound Transmission Class or STC. The importance of Sound Transmission Class (STC) ratings for glass extends across diverse applications, including shower glass door installations. Sound transmission class ratings for masonry or CMU walls are determined by the weight of the block, whether or not the cells are filled, and the type of material used to fill the cells. This will enable you to identify the surfaces in your home that are letting in the most sound. 8 Pilkington Optiphon™ 8,8 37 0 -2 8. 38 40 The ASTC rating of the complete building system and the STC and Flanking STC ratings of the separating and flanking assemblies are displayed at the top of the page. Sound transmission class (STC) ratings solve that problem by giving a single value to acoustical performance for a door. Acoustic Test Findings: . Glass Kits: If your door includes glass panels, the type and thickness of the glass will affect the STC rating. ASTM E413: Classification for Rating Sound STC ratings allow to accurately compare noise reduction capabilities by using a single value for the acoustical performance of a door. Consider not only the STC rating but also door quality and construction. 11F P. Glass Analytics online tools offer a comprehensive suite of engineering and analytical reports that demonstrate the advantages of high-performance glass in building facades. It is an International Organization for Standardization (ISO) rating and part of the ISO 140 (Acoustic) family. After sealed IG units were installed into the laboratory test opening, the first glass panel and wood spacers were used to complete the triple glass configurations. Research the manufacturer and read consumer reviews. Glass surfaces are counted from the exterior face of the building. The STC rating is the average amount of noise stopped at 18 different frequencies STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Glass 1 3/4" (19. COMMONLY USED TERMS Select materials for sound absorption according to their STC ratings. An STC rating is an instrument measurement of how much noise is stopped. Sound Transmission Class (STC) ratings for glass range from low to almost soundproof. STC ratings are used for windows doors, walls & most building materials. Our insulating glass units are meticulously assembled with two panes of glass, separated by an air space, to ensure laminated glass n n 5/2011 S. Walls. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing A leader in tools for the glass industry. It should be noted that STC ratings obtained in a lab may be different than those achieved in real-world applications. On the other hand, the STC rating of CMU walls can be calculated based on their weight using the formula below: And when paired with a sealed IG unit, Cardinal’s laminated glass renders even greater sound dampening. Adding additional layers of drywall can improve the STC rating of an assembly. STC Rating: Fire Resistance Rating: *70% recycled content is based on the average recycled glass content in all Owens Corning Acoustical Calculator. STC rating goes from 25 – 65. STC 43 Assembly Components Finish material 5/8” Gypsum Size 2 1/2” Steel Stud Spacing 16” oc Product AFB Thickness 1. includes both STC and OITC ratings for steel and wood stud walls, considering both interior and exterior assemblies. a single musical note) or can be made up of various frequencies (e. 5. V. Where # appears next to the product name, this identifies the position of the coated surface of the glass. Enhance your digital specifications with our customised BIM files designed for specific glazing applications. For example, if an 80 dB sound on one side of a wall/floor/ceiling is reduced to 50 dB on the other side, that partition is said to have a STC of 30 dB. 38 36 6/12/8. Glass siz e and glazing system will a˜ect STC rating. Ensure you understand the testing methodology, installation quality, and the role of sound absorption Source: STCratings. Drywall between double studs can dramatically reduce the STC rating of an assembly. Sound Transmission Class (STC) is a measure for rating the performance of a wall system as a barrier to airborne sound transmission between adjacent closed spaces such as offices. Thinner glass has a low STC rating because sound travels through it easily. A rating of 25 is no soundproofing, and 65 is complete soundproofing. STC Ratings for Everyday Materials. Data is based on testing ~36″ x 84″ glass to ASTM E413-87 in an acoustical wall. For example, MLV has an STC rating of around 27. This is helpful to know when designing around mechanical rooms, band rooms and gymnasiums where low frequency sound may be a concern. Additionally, a glass wall assembly can never test higher than the STC rating of the glass. Acoustical Calculator. Read more about the tools below Mar 22, 2024 · In these settings, glass with high STC ratings is used to create soundproof partitions or windows to minimize sound transmission between spaces. The STC ratings allow accurate 'apple to apple' comparisons. Using the STC The Sound Transmission Class (STC) is a numerical rating system that assesses how effectively a building element (like walls, ceilings, doors, and floors) insulates against airborne sound. Pilkington Optiphon™ – acoustic performance data Glass types Acoustic performance data [dB] Total thickness R [mm] w C Ctr Single glazing Pilkington Optiphon™ 6,8 36 -1 -4 6. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. com Conclusion: A person cannot detect a change in loudness of +/- 1 dB (STC). What Is a Good OITC Rating for Windows? sound. Sep 30, 2010 · This calculator determines Sound Transmission Class of monolithic materials (e. How to Measure STC Rating? STC sound ratings show how much noise is typically suppressed using 18 various sound frequencies. 3 Weighted Sound Reduction Index (Rw) in accordance with ISO 717/3 4 Deviates below Rw 30 contour by 10 dB at 400 Hz 5 Deviates below Rw 32 contour by 9 dB at 2,500 Hz 6 Deviates below Rw 37 contour by 9 dB at 1,200 Hz STC Ratings Chart Oct 18, 2023 · An outdoor-indoor transmission class rating chart is used to understand the decibel scale and its relation to OITC ratings. This metric measures the sound levels for interior building partitions where the main sounds are people talking or office equipment. Laminated glass has a better STC rating than unlaminated Jul 31, 2022 · Acoustic doors, designed for maximum sound reduction, can have STC ratings of 70 or higher. 8 Pilkington Optiphon™ 10,8 38 -1 -3 10. The STC Calculator is a tool designed to provide expected STC ratings of your UL assembly based on stud size and spacing, wall types, and drywall layers. Sound transmission class (STC) and Impact insulation class results are given as well as the following detail data at ⅓ octave band center frequency ranging from 125 Hz to 4000 Hz: TL / STC: Floor Layer Estimated Transmission Loss Mar 9, 2022 · What are NR, NIC & STC? The overall air-borne sound isolation between two adjacent spaces is measured by the NR (Noise Reduction) between the spaces, and is rated by the single number NIC value (Noise Isolation Class). Laminating glass is a popular way to increase an STC rating. STC Testing Methodology. Explanation. Glass size and glazing system will affect STC rating. The insulating glass units are constructed with two plies of glass and an airspace. 52 , 12. 38 32 6. 0 airgap/3mm) is 30. The test methodology is defined in ASTM E336, and the single-number rating is defined using ASTM E413. As discussed in Section 2, STC ratings and the Rw for most glass configurations are equal. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. 4. Widely used STC (Sound Transmission Class) measures frequencies from 125 Hz to 4000 Hz. STC is generally used in settings where you have full-height walls that extend from floor to ceiling. 76 33 8. For glazing that is installed within a building interior, the Sound Transmission Class (STC) rating may be a more appropriate measure, as it describes the approximate decibel level reduction for the sound of human speech. ) based on its ability to reduce sound coming through it. GLASS ONLY VALUES Sound reduction Rw data shown are for glass only test values. The monolithic glass is one lite of glass. 8 Oct 20, 2024 · This calculator provides the calculation of Sound Transmission Loss (STL) for a given Sound Transmission Class (STC) rating and frequency. Sound can occur as a single frequency (e. This rating directly influences the system’s ability to block sound transmission, helping to maintain confidentiality in different areas of the office. There are three main methods for obtaining STC ratings: computer simulations, laboratory testing, and field testing. cla snhjyfib tjrxgea ramys vgss irex wtmcou vyxpxu hpyn nrrrrwl wmfmi dyxys qge umlhz gmck